jeanette >> welcome, i didn't know the BB's gender till the 18th week and on top of that, it was only 80% confirmed. however, i managed to know the gender, with gynae's surety now, two days ago in my 20th week...so don't worry ok? sometimes the baby is just shy...esp girls..it's harder to spot.
for tests, i didn't go for oscar but i had the usual - blood sugar, immunity agst various infectious diseases etc..and also a planned detailed scan in my 21st/22nd week. this is something i think u need to book cos it can only take place b4 the 22nd week.